You can explore (US) historical pictures, maps, and more in the digital collections from the Library of Congress. The option to download of images is available. Any citation must be created by the user. "The LOC concentrates on its most rare collections and those unavailable anywhere else. The services are a gateway to a growing treasury of digitized photographs, manuscripts, maps, sound recordings, motion pictures, and books, as well as "born digital" materials such as Web sites. In addition, the Library maintains and promotes the use of digital library standards and provides online research and reference service"

You can explore historical pictures and documents that have been digitized from the NYPL's collection. They are in the Public domain. You only need to click on the picture to access its page. You can download links on the right, The citation details are on the left, under the picture.

Article written by James W. P. Campbell. He has travelled the world together with Will Pryce the architectural photographer, visiting and photographing 85 of the world's greatest libraries in 21 countries. He now has written a book The Library: A World History (Chicago University Press), which he claims is the most complete account of library buildings to date.

This Is What A 1915 Military Hospital Looks Like Now. "Then and now" photos show the WWI military hospital on the Greek island of Lemnos, where nurses treated Anzac soldiers injured at Gallipoli. This set of 16 images (the current day colour photos overlaid with the 1915 black and white shots) are part of an exhibition on display at the State Library of NSW

The photos and drawings are sourced from more than 600 million library book pages scanned in by the Internet Archive organisation. These images have been difficult to access until now. Internet Archive Book Images Visitors to the site are free to copy and make use of the pictures without charge. Most of the images that are in the books are not in any of the art galleries of the world - the original copies have long ago been lost. The pictures range from 1500 to 1922, when copyright restrictions kick in. "

"Getty Images has single-handedly redefined the entire photography market with the launch of a new embedding feature that will make more than 35 million images freely available to anyone for non-commercial usage"